On Mon, Sep 26, 2022 at 12:11:06PM -0500, Bjorn Helgaas wrote: > [+cc Alex, David, sparclinux, LKML] > > On Sun, Sep 25, 2022 at 06:59:23PM +0200, Richard Rogalski wrote: > > I hope this is the right place for this. > > This is great, thanks a lot for your report! Is this a regression? > If so, what's the most recent kernel that worked? > > > In my dmesg output, I get things like: > > > > pci 0000:04:00.0: can't claim VGA legacy [mem 0x000a0000-0x000bffff]: no compatible bridge window > > pci 0000:06:00.0: can't claim VGA legacy [mem 0x000a0000-0x000bffff]: no compatible bridge window > > pci 0000:06:00.1: can't claim BAR 0 [mem 0x84110200000-0x84110203fff 64bit]: no compatible bridge window > > > > I opened a bug for amdgpu [here](https://gitlab.freedesktop.org/drm/amd/-/issues/2169) but looking further into it I think it is caused by deeper PCIe problems :\ > > > > https://gitlab.freedesktop.org/drm/amd/uploads/cbf47807972c8a990bb2a8cdbb39ad9e/8C7CA9QNG dmesg log > > https://gitlab.freedesktop.org/drm/amd/uploads/6a799425dea50febd82f8bc11e54433a/ll.txt lspci -vv > > https://gitlab.freedesktop.org/drm/amd/uploads/7d4a794b1f7d67a1ffcdee5dfdec3ad6/config.txt kernel .config > > Your error output attachment [1] contains an address that looks like > it's in 06:00.0 BAR 5: > > pci 0000:06:00.0: reg 0x24: [mem 0x84001200000-0x8400123ffff] > NON-RESUMABLE ERROR: insn effective address [0x0000084001201410] > > This looks like an amdgpu issue. There have been recent changes like > c1c39032a074 ("drm/amdgpu: make sure to init common IP before gmc") > and dd6aeb4e5f59 ("drm/amdgpu: Don't enable LTR if not supported") > that could be related. > > The PCI "no compatible bridge window" warnings are definitely an > issue, but I don't think they're related to the amdgpu crash: > > pci@400: PCI MEM64 [mem 0x84100000000-0x84dffffffff] offset 80000000000 > pci_bus 0000:00: root bus resource [mem 0x84100000000-0x84dffffffff] (bus address [0x4100000000-0x4dffffffff]) > pci 0000:09:00.0: can't claim BAR 0 [mem 0x84120000000-0x8412007ffff 64bit]: no compatible bridge window > > Those and this from lspci: > > 0000:01:00.0 bridge to [bus 02-09] window [mem 0x4100000000-0x412fffffff pref] > 0000:02:0c.0 bridge to [bus 09] window [mem 0x4120000000-0x412fffffff pref] > 0000:09:00.0 Intel 82599ES NIC Region 0: Memory at 0x84120000000 > > are telling us there's something wrong with how the resource-to-bus > offset is being applied. It looks like the offset was applied to the > NIC BAR, but didn't get applied to the bridge windows. > > Could you start a new thread here (linux-kernel@xxxxxxxxxxxxxxx, > linux-pci@xxxxxxxxxxxxxxx, and sparclinux@xxxxxxxxxxxxxxx) for this > issue and attach the dmesg log when booting with "ofpci_debug=1"? Any chance you could collect a dmesg log with "ofpci_debug=1"? I'd like to look at the resource-to-bus offset issue. > Do the devices we complain about (NICs and storage HBAs 09:00.0, > 09:00.1, 0d:00.0, 0d:00.1, 0e:00.0, 0f:00.0, 0001:03:00.0, > 0001:03:00.1, 0001:0:00.0, 0001:0a:00.1) work? > > Bjorn > > [1] https://gitlab.freedesktop.org/drm/amd/uploads/b51f4d6783eeebf90de9a400525d07d6/qq
